Observation of the B[superscript +] → D[superscript ∗] − K[superscript +] π[superscript +] decay
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PhysRevD.96.011101.pdf
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Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Ali, S.
Alkhazov, G.
Date Issued
July 2017
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaij, R., et al. “Observation of the B[superscript +] → D[superscript *] − K[superscript +] π[superscript +] Decay.” Physical Review D, vol. 96, no. 1, July 2017. © 2017 CERN, for the LHCb Collaboration
Version
Final published version
Abstract
The B[superscript +]→D[superscript *-]K[superscript +]π[superscript +] decay potentially provides an excellent way to investigate charm meson spectroscopy. The decay is searched for in a sample of proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb[superscript -1]. A clear signal is observed, and the ratio of its branching fraction to that of the B[superscript +]→D[superscript *-]π[superscript +]π[superscript +] normalization channel is measured to be B(B[superscript +]→D[superscript *-]K[superscript +]π[superscript +])/B(B[superscript +]→[superscript *-]π[superscript +]π[superscript +])=(6.39±0.27±0.48)×10[superscript -2], where the first uncertainty is statistical and the second is systematic. This is the first observation of the B[superscript +]→D[superscript *-]K[superscript +]π[superscript +] decay.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevD.96.011101
